From patchwork Mon May 31 14:03:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 451087 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C02DC47083 for ; Mon, 31 May 2021 14:06:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A1E9613A9 for ; Mon, 31 May 2021 14:06:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232484AbhEaOH5 (ORCPT ); Mon, 31 May 2021 10:07:57 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:40457 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232750AbhEaOFy (ORCPT ); Mon, 31 May 2021 10:05:54 -0400 Received: from mail-wm1-f71.google.com ([209.85.128.71]) by youngberry.canonical.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.93) (envelope-from ) id 1lniWb-0001tr-2i for stable@vger.kernel.org; Mon, 31 May 2021 14:04:13 +0000 Received: by mail-wm1-f71.google.com with SMTP id o82-20020a1ca5550000b029019ae053d508so12764wme.6 for ; Mon, 31 May 2021 07:04:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=dgTSNZe6+QH6HNKJLb5tMT2tagGq/tOKzcBKc+w7RxY=; b=jDNEOtt179fMmHEn9Pyw9fx/XuTt/PgX7SPoLnehVCJLY8/s4TAP3hSVemNIv/6cdc e7+ZWS78Uzq4nU9U/rBnSxOL0lj0DmEBoyFDO60lWvJovjoMb/2HEVGOA3qXrBm5YD2s T9XXfpZoaNj0ZqQmHBYaKJUiEgA4VIqbxKyrklqd/7NRgCRwXXkWHKeqgAf3fd67lUff U9sY3qkwySc7Hepos20dKFU3be7lpCnMBMhB9hZzVvnUWa4yrvQFjtATMvrTUpJvvxgE DmsKXyY8hoxU6DO1up40DJuDv7w5BLUwZW7KY7VPzkgjpmkoLXFCoEHbGpqWNAjLMEah FztQ== X-Gm-Message-State: AOAM533Qx+LNt16c0fsxPyqozZ69gSZsIMQdQinLFF5CXtQDQlkxmJ83 s250vDD2o5CPScz1txjXJY9F+e6uG7RjIP8uZ78CyRbuwPR7bJl5bn9jfcx65ihvsuVbqfy79FN jRpSL+Xxg/I5yk/ejGgssmNEoyx+baWMdIA== X-Received: by 2002:a1c:e90d:: with SMTP id q13mr21354714wmc.163.1622469852256; Mon, 31 May 2021 07:04:12 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyQKVEWnWOKH1iQ1q2G14Jf6ofLD6Kw2Hb/0+rL+bdFmRi4ajpNvKESX1iFsCi994G8AL5oEQ== X-Received: by 2002:a1c:e90d:: with SMTP id q13mr21354692wmc.163.1622469852091; Mon, 31 May 2021 07:04:12 -0700 (PDT) Received: from localhost.localdomain (xdsl-188-155-185-9.adslplus.ch. [188.155.185.9]) by smtp.gmail.com with ESMTPSA id b188sm13342971wmh.18.2021.05.31.07.04.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 May 2021 07:04:11 -0700 (PDT) From: Krzysztof Kozlowski To: stable@vger.kernel.org Cc: Andrea Righi , Paolo Bonzini , Vitaly Kuznetsov , Krzysztof Kozlowski Subject: [PATCH v3 | stable v5.4 0/3] x86/kvm: fixes for hibernation Date: Mon, 31 May 2021 16:03:44 +0200 Message-Id: <20210531140347.42681-1-krzysztof.kozlowski@canonical.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hi, This is version 2 of a backport for v5.4. Changes since v2: 1. Send proper backport without context changes, 2. This series is only for v5.4. Changes since v1: 1. Clean backport, without context changes. The first patch specifically fixes bug aftert 2nd resume: BUG: Bad page state in process dbus-daemon pfn:18b01 page:ffffea000062c040 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 compound_mapcount: -30591 flags: 0xfffffc0078141(locked|error|workingset|writeback|head|mappedtodisk|reclaim) raw: 000fffffc0078141 dead0000000002d0 dead000000000100 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set bad because of flags: 0x78141(locked|error|workingset|writeback|head|mappedtodisk|reclaim) Best regards, Krzysztof Vitaly Kuznetsov (3): x86/kvm: Teardown PV features on boot CPU as well x86/kvm: Disable kvmclock on all CPUs on shutdown x86/kvm: Disable all PV features on crash arch/x86/include/asm/kvm_para.h | 10 +--- arch/x86/kernel/kvm.c | 92 ++++++++++++++++++++++++--------- arch/x86/kernel/kvmclock.c | 26 +--------- 3 files changed, 72 insertions(+), 56 deletions(-)